Calcium, Lime, & Rust Remover has long been known as an effective commercial cleanser for hard water stains and other buildup. We spoke to a CLR Brands representative to get some advice on how to ...

The deposits are alkaline, so acidic cleaners, such as CLR Calcium, Lime and Rust Remover ($6.28 for 28 ounces at Home Depot), eat away at them effectively. CLR is labeled safe to use on plastic ...